[PATCH v4 3/3] drm/nouveau: Support NVIDIA format modifiers
James Jones
jajones at nvidia.com
Fri Feb 7 21:08:19 UTC 2020
Allow setting the block layout of a nouveau FB
object using DRM format modifiers. When
specified, the format modifier block layout and
kind overrides the GEM buffer's implicit layout
and kind. The specified format modifier is
validated against the list of modifiers supported
by the target display hardware.
v2: Used Tesla family instead of NV50 chipset compare
v4: Do not cache kind, tile_mode in nouveau_framebuffer
Signed-off-by: James Jones <jajones at nvidia.com>
---
drivers/gpu/drm/nouveau/dispnv50/wndw.c | 18 +++--
drivers/gpu/drm/nouveau/nouveau_display.c | 90 ++++++++++++++++++++++-
drivers/gpu/drm/nouveau/nouveau_display.h | 4 +
3 files changed, 105 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/dispnv50/wndw.c b/drivers/gpu/drm/nouveau/dispnv50/wndw.c
index a424ecfdf8e9..064e8825d451 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/wndw.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/wndw.c
@@ -43,8 +43,9 @@ nv50_wndw_ctxdma_new(struct nv50_wndw *wndw, struct nouveau_framebuffer *fb)
{
struct nouveau_drm *drm = nouveau_drm(fb->base.dev);
struct nv50_wndw_ctxdma *ctxdma;
- const u8 kind = fb->nvbo->kind;
- const u32 handle = 0xfb000000 | kind;
+ u32 handle;
+ u32 unused;
+ u8 kind;
struct {
struct nv_dma_v0 base;
union {
@@ -56,6 +57,9 @@ nv50_wndw_ctxdma_new(struct nv50_wndw *wndw, struct nouveau_framebuffer *fb)
u32 argc = sizeof(args.base);
int ret;
+ nouveau_framebuffer_get_layout(&fb->base, &unused, &kind);
+ handle = 0xfb000000 | kind;
+
list_for_each_entry(ctxdma, &wndw->ctxdma.list, head) {
if (ctxdma->object.handle == handle)
return ctxdma;
@@ -236,14 +240,18 @@ nv50_wndw_atomic_check_acquire(struct nv50_wndw *wndw, bool modeset,
{
struct nouveau_framebuffer *fb = nouveau_framebuffer(asyw->state.fb);
struct nouveau_drm *drm = nouveau_drm(wndw->plane.dev);
+ uint8_t kind;
+ uint32_t tile_mode;
int ret;
NV_ATOMIC(drm, "%s acquire\n", wndw->plane.name);
if (asyw->state.fb != armw->state.fb || !armw->visible || modeset) {
+ nouveau_framebuffer_get_layout(&fb->base, &tile_mode, &kind);
+
asyw->image.w = fb->base.width;
asyw->image.h = fb->base.height;
- asyw->image.kind = fb->nvbo->kind;
+ asyw->image.kind = kind;
ret = nv50_wndw_atomic_check_acquire_rgb(asyw);
if (ret) {
@@ -255,9 +263,9 @@ nv50_wndw_atomic_check_acquire(struct nv50_wndw *wndw, bool modeset,
if (asyw->image.kind) {
asyw->image.layout = 0;
if (drm->client.device.info.chipset >= 0xc0)
- asyw->image.blockh = fb->nvbo->mode >> 4;
+ asyw->image.blockh = tile_mode >> 4;
else
- asyw->image.blockh = fb->nvbo->mode;
+ asyw->image.blockh = tile_mode;
asyw->image.blocks[0] = fb->base.pitches[0] / 64;
asyw->image.pitch[0] = 0;
} else {
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index 4273d9387cda..da8319182cf0 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -224,6 +224,76 @@ static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
.create_handle = nouveau_user_framebuffer_create_handle,
};
+static void
+nouveau_decode_mod(struct nouveau_drm *drm,
+ uint64_t modifier,
+ uint32_t *tile_mode,
+ uint8_t *kind)
+{
+ BUG_ON(!tile_mode || !kind);
+
+ if (modifier == DRM_FORMAT_MOD_LINEAR) {
+ /* tile_mode will not be used in this case */
+ *tile_mode = 0;
+ *kind = 0;
+ } else {
+ /*
+ * Extract the block height and kind from the corresponding
+ * modifier fields. See drm_fourcc.h for details.
+ */
+ *tile_mode = (uint32_t)(modifier & 0xF);
+ *kind = (uint8_t)((modifier >> 12) & 0xFF);
+
+ if (drm->client.device.info.chipset >= 0xc0)
+ *tile_mode <<= 4;
+ }
+}
+
+void
+nouveau_framebuffer_get_layout(struct drm_framebuffer *fb,
+ uint32_t *tile_mode,
+ uint8_t *kind)
+{
+ if (fb->flags & DRM_MODE_FB_MODIFIERS) {
+ struct nouveau_drm *drm = nouveau_drm(fb->dev);
+
+ nouveau_decode_mod(drm, fb->modifier, tile_mode, kind);
+ } else {
+ const struct nouveau_bo *nvbo = nouveau_gem_object(fb->obj[0]);
+
+ *tile_mode = nvbo->mode;
+ *kind = nvbo->kind;
+ }
+}
+
+static int
+nouveau_validate_decode_mod(struct nouveau_drm *drm,
+ uint64_t modifier,
+ uint32_t *tile_mode,
+ uint8_t *kind)
+{
+ struct nouveau_display *disp = nouveau_display(drm->dev);
+ int mod;
+
+ if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
+ return -EINVAL;
+ }
+
+ BUG_ON(!disp->format_modifiers);
+
+ for (mod = 0;
+ (disp->format_modifiers[mod] != DRM_FORMAT_MOD_INVALID) &&
+ (disp->format_modifiers[mod] != modifier);
+ mod++);
+
+ if (disp->format_modifiers[mod] == DRM_FORMAT_MOD_INVALID)
+ return -EINVAL;
+
+ nouveau_decode_mod(drm, modifier, tile_mode, kind);
+
+ return 0;
+}
+
static inline uint32_t
nouveau_get_width_in_blocks(uint32_t stride)
{
@@ -304,6 +374,8 @@ nouveau_framebuffer_new(struct drm_device *dev,
struct nouveau_framebuffer *fb;
const struct drm_format_info *info;
unsigned int width, height, i;
+ uint32_t tile_mode;
+ uint8_t kind;
int ret;
/* YUV overlays have special requirements pre-NV50 */
@@ -326,6 +398,18 @@ nouveau_framebuffer_new(struct drm_device *dev,
return -EINVAL;
}
+ if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
+ if (nouveau_validate_decode_mod(drm, mode_cmd->modifier[0],
+ &tile_mode, &kind)) {
+ DRM_DEBUG_KMS("Unsupported modifier: 0x%llx\n",
+ mode_cmd->modifier[0]);
+ return -EINVAL;
+ }
+ } else {
+ tile_mode = nvbo->mode;
+ kind = nvbo->kind;
+ }
+
info = drm_get_format_info(dev, mode_cmd);
for (i = 0; i < info->num_planes; i++) {
@@ -336,11 +420,11 @@ nouveau_framebuffer_new(struct drm_device *dev,
mode_cmd->height,
i);
- if (nvbo->kind) {
+ if (kind) {
ret = nouveau_check_bl_size(drm, nvbo,
mode_cmd->offsets[i],
mode_cmd->pitches[i],
- height, nvbo->mode);
+ height, tile_mode);
if (ret)
return ret;
} else {
@@ -356,6 +440,7 @@ nouveau_framebuffer_new(struct drm_device *dev,
drm_helper_mode_fill_fb_struct(dev, &fb->base, mode_cmd);
fb->nvbo = nvbo;
+ fb->base.obj[0] = &nvbo->bo.base;
ret = drm_framebuffer_init(dev, &fb->base, &nouveau_framebuffer_funcs);
if (ret)
@@ -632,6 +717,7 @@ nouveau_display_create(struct drm_device *dev)
dev->mode_config.preferred_depth = 24;
dev->mode_config.prefer_shadow = 1;
+ dev->mode_config.allow_fb_modifiers = true;
if (drm->client.device.info.chipset < 0x11)
dev->mode_config.async_page_flip = false;
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.h b/drivers/gpu/drm/nouveau/nouveau_display.h
index c54682f00b01..3051a6603653 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.h
+++ b/drivers/gpu/drm/nouveau/nouveau_display.h
@@ -76,6 +76,10 @@ int nouveau_display_dumb_map_offset(struct drm_file *, struct drm_device *,
void nouveau_hdmi_mode_set(struct drm_encoder *, struct drm_display_mode *);
+void
+nouveau_framebuffer_get_layout(struct drm_framebuffer *fb, uint32_t *tile_mode,
+ uint8_t *kind);
+
struct drm_framebuffer *
nouveau_user_framebuffer_create(struct drm_device *, struct drm_file *,
const struct drm_mode_fb_cmd2 *);
--
2.17.1
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